/*
 * Copyright 2010 Xemantic
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.xemantic.tadedon.gwt.user.client;

import java.util.HashMap;
import java.util.Map;

import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.user.client.ui.HTML;

/**
 * 
 * <p>
 * Created on Oct 28, 2010
 *
 * @author hshsce
 */
public final class Htmls {

	private Htmls() { /* util class, non-instantiable */ }


	private static final Map<String, HTML> cache = new HashMap<String, HTML>();

	public static HTML getHtml(String id) {
		HTML html = cache.get(id);
		if (html == null) {
			Element element = Document.get().getElementById(id);
			if (element == null) {
				throw new IllegalArgumentException("No HTML Element with id: " + id);
			}
			html = HTML.wrap(element); 
			cache.put(id, html);
		}
		return html;
	}

}
